The influence of filtration conditions and cleaning methods on the selection of filter bags for baghouses
The filter bag is the filter element of the bag filter, and the bag dust removal technology plays a role in filtering and purifying the industrial dust-containing flue gas through the filter bag, and the annual consumption is huge, so the reasonable selection and use of the filter bag will directly affect the dust filtration performance and service life of the filter bag, specifically, the selection of the filter bag of the bag filter will be affected by the filtration conditions and the cleaning method.
The requirements of the filter filter condition of the baghouse for the selection of filter bags
In the process of working, the filter bag has problems such as short service life and easy breakage, and most of the filter bag damage is generated in the case of overload use, so the reasonable selection of the filter bag type is of great significance for reducing the cost of the enterprise and reducing the waste of resources.
The filter media plays a major role in the process of filtering the gas in the filter bag, so the material of the filter media is an important factor in the filter bag selection process. In the process of filtering exhaust gas dust, due to different temperature, humidity, acidity and alkalinity and other factors in different dust gas environments, it is necessary to comprehensively consider the selection of the type of filter material in the filter bag during use. For example, the material of polypropylene filter material will change sharply in the environment above 80 °C, and the filtration effect of dust will decrease sharply; when the substances in the dust contain strong acidity or alkaline, it will corrode the filter material, and some of the filter materials have poor acid and alkali resistance, resulting in the surface damage of the filter material and the holes will be generated, reducing the filtration performance of the filter bag; when the substances in the dust have a high concentration of water vapor, the pore size of the filter material will decrease sharply due to the increase in the diameter of the fiber after moisture absorption in the process of moisture absorption of some filter materialsWhen the dust contains water vapor and alkaline substances, some filter materials such as polyester fiber will be hydrolyzed in water and alkaline environment, resulting in fiber breakage and damage to the filter material. To sum up, in the process of selecting filter materials, the corresponding filter material should be comprehensively selected according to the influencing factors such as dust particle diameter, gas body temperature and humidity, so as to ensure the better filtration performance of the filter bag.